Report "I have an adesso wkb-4000us keyboard. i use to be able to reset the keyboard by pressing a button the usb piece that attach to the computer and press the fn key on the keyboard and it will work again.. but for some reason .. i cant seem to do that any more to get the key board to work. i use a different keyboard and its usb piece from another computer that i know is working and that also is not working on this computer.. what should i do.. help"